CXXD_HAS_STD_CHRONO — Determines whether the C++ standard chrono implementation or the Boost chrono implementation has been chosen.
// In header: <boost/cxx_dual/impl/chrono.hpp> CXXD_HAS_STD_CHRONO
The object-like macro expands to: 1 if the C++ standard chrono implementation has been chosen 0 if the Boost chrono implementation has been chosen.
